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https://issues.apache.org/jira/browse/HIVE-9251?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14267243#comment-14267243
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Xuefu Zhang commented on HIVE-9251:
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The patch looks good. One question though: (-1, -1) is returned for get memory
and core call, which makes me wonder what's the behavior on Hive side if that's
the case. Should we somehow safeguard on this?
> SetSparkReducerParallelism is likely to set too small number of reducers
> [Spark Branch]
> ---------------------------------------------------------------------------------------
>
> Key: HIVE-9251
> URL: https://issues.apache.org/jira/browse/HIVE-9251
> Project: Hive
> Issue Type: Sub-task
> Components: Spark
> Reporter: Rui Li
> Assignee: Rui Li
> Attachments: HIVE-9251.1-spark.patch, HIVE-9251.2-spark.patch
>
>
> This may hurt performance or even lead to task failures. For example, spark's
> netty-based shuffle limits the max frame size to be 2G.
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